Roofs are subjected to tear and wear due to factors such as extreme weather conditions and poor maintenance. If you don't take care of your roof, mold and mildew can cause structural damage and costly repairs. If you don't take care of your roof, mold and mildew can cause structural damage and costly repairs. It is important you have the necessary tools to take care of your roof. First you will need a utility knife. Utility knives can be used to cut drywall, trim asphalt roof shingles, and slice through fiberglass insulation. Utility knives are quite safe to use since the razor-sharp blade can be retracted. Aside from the utility knife, you will also need a roofing hammer that will refasten shingles and other roof coverings. A roofing hammer has two different head styles: one has a curved claw and the other has a straight claw. Most commercial flat roof systems Logan, UT recommend the straight claw hammer. Invest in a circular saw to cut singles or panels. This electrically-powered tool can cut roof panels and plywood sheathing into an array of different sizes. To hammer nails in, abandon the manual hammer and opt for a nail gun. Compressed air is used to push the nails from the loaded gun strip unto the sheathing or shingles.